Machine for blading turbines.



J. WILLIAMSON.-

,MACHINE FOR BLADING TURBINES.

APPLICATION FILED JULY 23. 19:4.

Patented Feb.22,1916.

2 SHEETS-SHEET! INVENTUR M ATTORNEYS WITNESSES J. WILLIAMSON.

MACHINE FOR BLADING TURBINES.

APPLICATION FILED JULY 23.19l4.

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. Swag [ufl i M 2/ I I 5 20 1 A u WITNESSES mvEmon ATTORNEYS UNITED STATES PATENT ori ion.

JAMES WILLIAMSON, 0F NEWPORT NEWS, VIRGINIA.

MACHINE FOR BLADING TnRB NEs;

Specification of Letters Patent.

, Patented Feb. 22, 1916.

' Application filed July 23, 1914. Serial No. 852,712;

which is especially designed to be employed with blade carrying members which-may .be readily moved or handled. In my present invention, I have devised a novel machine for securing blades and distance pieces'in turbine grooves, which is especially adapted to be employed for securing theblades in turbine casings, the weight of which, in some cases, is upward of seventy tons, thereby rendering them difficult of adjustment with respect to the blading machine.

lVith the above in view, my invention consists of a novel machine forsecuring blades and'distance pieces in the groove carrying member of a turbine.

It further consists of a novel construction and arrangement of a tool and novel means for actuating the same.

It further consists of novel means for adjusting the stroke of the tool, whereby the necessity of moving the groove carrying member of the turbine is eliminated.

Other novel features of my invention will more clearly-hereinafter appear in the detail description thereof.

For the purpose of illustratingmy invention, I have shown in the accompanying drawing, one form thereof which is at present preferredby me, since the same will give in practice, satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my'invention consists can be variously arranged and organized, and that my invention is not limited except by the scope of the appended claims to the precise arrangement and organization of these instrumentalities, as herein shown and described. I

Figure 1 represents a side elevationlof a machine for securing blades in. turbines, 'embodying my invention, in assembled position, J

with respect to a groove carrying member, the latter being shown in section. Fig. 2 represents an elevation of my device. Fig. 3

represents a section on line w-ac of Fig. 1. Fig. 4 represents a sectional elevation of the motor. Fig. 5 represents, in longitudinal section, a valve employed. Fig. 6 represents a cross sectional view of the valve.

Similar numerals of reference indicate corresponding parts in the figures.

Referring'to the drawings :1 designates a blade carrying member of a turbine, illustrated in the present instance as a casing member having a desired number of grooves 2 there1n,w1th which the slots 3 communicate in order that the blades 4 and distance 15, which communicates with a passage 16 i in communication with'a conduit 17 leading to the port 18 of a valve mechanism 19. The

opposite end of the casing 12 is provided 7 with av closure 20 having a groove 21 therein which leads to a passage. 22 communicating by means of a conduit 23 with a port 24 of the valve mechanism19. The valve mechanism may be located at any'convenient place accessible to the operator, and for sake of illustration is shown as secured to the casing 12. The valve mechanism is provided with an inlet 25 adapted to be connected with the source otmotive fluid supply, whereby the motive fluid is'free at all times to enter the passage 26 of a valve plug 27, said passage 26 communicating with a transverse passage 28, adapted to be brought @into and out iof register withtheports 18 and 24:. The valve plug 27 is retained against its seat'by a flanged sleeve 29 and a nut 30. The valve plug is cut away on one side, as at 31, .in

order to form achamber communicating with either the port; 18 or the port 24 and with an exhaustport 32'. The valve plug is recessed, as at 33, thereby forming shoulders 34f and 35, which serve as stops for the cap screw 36, which latter is fixed in position by means of a lock nut 37. 38 designates a handle secured to the valve plug 27 in any desired manner. The valve,

the passage 22, valve mechanism, and exhaust port 32. The actuating handle 38 is then moved to brlng mechanism may be located at any desired place, and in the present instance, I have shown the same as provided with apertured flanges 39 and 40, in order that the valve desired type. The piston rod 4-3 also-passes through a guide which consists of a yoke 45. in the present instance, which is secured to the flanged end of the casing 12 by means of fastening devices 46. The end of thepis' ton 43 is provided with an eye or aperture 45, through which passes a bolt 48, provided with a nut 49. Said bolt also passes through one of the apertures 50 in the forked end of a lever 51, which is provided with a. hub 52, through which passes a shaft journaled in brackets 54:, carried in any desired manner by the beams or members 7. The lever 51 has secured to its opposite end a pressing tool or blade 55 by means of fastening devices 56, said tool being adapted'to travel in a turbine groove, as will now be set forth.

The operation of my novel machine for blading turbines will now be readilyapparent to those skilled in this art, and is as follows: The blade carrying member, such as, for example, the turbine casing, has a wedge or stop inserted in" the turbine groove 2, which is to be filled, said wedge or stop serving as an abutment for the blades and distance pieces. The blades and distance pieces are then inserted in the groove 2 through the slot 3 in front of the tool The operator then actuates the handle 38 to bring the port 18 into register with the passage 28 in the valve plug, whereupon live motive fluid, entering through the inlet 25, passes through the passage 26 and. passage 28 in the valve'plug and through the conduit 17 into the piston chamber il in rear of the piston 42, thereby causing.

the latter to be advanced. This causes the piston rod 43 to rock thelever 51 on the shaft 53, and the tool 55 will be advanced in a curvilinear path and act as a pressing. tool to fix the turbine blades and distance The exhaust pieces in the turbine groove. in front of the piston 42 takes place through conduit 23, port 24; of the the port 24: into register with the passagef28,

whereupon live motive fluid will be ad-- mitted into the piston chamber 41in front of the pistons-2 and cause the latter to be moved rearwardly. The exhaust inthe rear of the piston takes place through the passage 1G, conduit- 17, port .18, andport 32 .1 of the valve mechanism. After a portion'ofthe turbine groove has been filled with the turbine blades and distance'pieces, the end of the piston rod 43 is connected with one we of theother apertures 50 in the lever 51, thereby brin 'ing the pressing tool 55, when in its initial position, in rear of the next. succeeding slot 23, through which addie.

tional blades and distance pieces are inserted and fixed in position in the manner above described. The entire groove is filled in this manner with turbine blades and distance pieces, it being understood. that the wedge or stop is removed and the place occupied thereby filled with turbine blades and distance pieces.

'lt'ewill be seen that the piston rod travels in a rectilinear path, while the pressingtool travels ina curvilinear path orin the arc of a circle parallel to or concentric with a turbine groove. By the'employment of my present invention, any desired number of turbine blades and distance pieces may".- be simultaneously fixed in position. bine blades and distance pieces are-ordinarilysecured in the turbine grooves'by inserting the same separately into the groove and'calking them in place by hand,.the result of which is thatit is necessary-to. rectify the blades and distance pieces. Such work not only; consumes a large amount. of time, but-"also requires skilled. labor to properlydo thework. Since the pressing tool travels in a curvilinear path, there is no chance for the turbine blades and distance pieces binding in the grooves. I

It will'be apparent that Iprovide means Lil Tur-

whereby the pressingtool may be made to travel over difierent portions of the work in a circular path. having the lever axis forits center.- I V Owing to themanner inwhichthe motor.

and its adjuncts'are supported by the blade carrying member, an'dthe manner in which 1 the pressing tool is operated; the necessity of moving; the turbine .caslng during the blading operation is-entirely eliminated,

I am aware thatit has heretofore been proposed. toemploy a pressing tool, which is reciprocated in a path substantially tangential to a turbine groove. My present invention is entirely differentiated from such construction, since I employ ahcvel construction and arrangement of motor and tool carrying member, and the pressing tool 1 1s reciprocated in a curvilinear patli't sub stantially parallel to theturbine groove,

and to none of the constructions in the. prior 12b statement of the invention and the above 5 invention or sacrificing anyof its advantages.

Having thus described my invention, what 4 I claim as new and desire to secure by Let ters'Patent, is i 1. A machlne for securing blades and distance pieces in turbine grooves, comprlsing a support, a motor movably carried thereby, I

a lever fulcrumed in said supportand operatively connected with said motor, a tool rigidly carried by the end of said lever, whereby said toolis made to travel in a circular path having the lever axis as its center. w

2. A machine for securing blades and distancepieces in turbine grooves, comprising a support, a motor carried thereby, alever fulcrumed in said support and operatively connected with said motor, a tool fixed to the end of said lever, whereby said tool is made to travel in a circular pathhaving the lever axis as its center, means whereby said tool may be made to travel over different portions of the work, and actuating means for said motor,

3. A machine for securing blades and dis tance pieces in turbine grooves, comprising a support, a motor carried thereby and provided with a reciprocating piston rod, a lever pivotally supported and having spaced apertures in one end thereof, a fastening device passing through one of said apertures and connected withsaid piston rod and a tool rigidly fixed to the other end of said lever, whereby said tool is made to travel in a circular path having the lever axis as its center.

4. A machine for securing blades and distance pieces in turbine grooves, comprising a support, a motor having trunnions journaled in said support and provided with a reciprocating piston and piston rod, a guide for said piston rod,means to control admission and exhaust of motive fluid to reciprocate said piston, a lever pivotally sup' ported and having a forked end, into which the end of said piston is adapted to extend, and means to secure the end of said piston rod at different points on said forked end.

5. In a machine for securing blades and distance pieces in turbine grooves, a support consisting of longitudinal members, adapted to rest on the blade carrying member of the turbine, brackets carried by said members, a motor pivotally supported by said brackets and provided with areciprocating piston and piston rod, means to control admission of motive fluid to reciprocate said piston, a

lever having a hub pivotally supportedby said member, said lever having apertures at one end at different radial points thereon, means to connect said piston with a predetermined aperture, and a tool secured to the other end of said lever and adapted totravel in a curvilinear path.

6. machine for securlng, blades and dlstance pieces in turbine grooves, comprlsing a supportconsisting of a plurality oflongitudinal members and cross members.

connecting said longitudinal. members,

brackets carried by said members, a motorjournaled in said brackets and provided with a reciprocating piston and piston rod, actuating means for said motor to reciprocate said piston,a lever pivotally carried by said support, means tosecure the end of said piston at difierent radial points on the end of said lever, and a tool carried by said lever.

7. In a machine of the character stated a support adapted to be located above the turbine casing,.a motor carried by said sup port and provided with a reciprocating piston and piston rod, a lever fulcrumed in said support and having its fulcrum on the horizontal axis of said casing, a tool fixed to the end of said lever, whereby said tool is made to travel in a circular path having the lever axis as its center, and actuating meansfor said motor.

8. In a machine of the character stated a-support adapted to be located above the turbine casing, a motor pivotallycarried by said support, bracketscarried by said'support, a lever fulcrumed in said brackets,

means to secure the piston of said motor to i the end of said lever at different points, and a pressing tool rigidly carried by said lever,

whereby the tool'is made to travel in a circular path having the lever axis as itscenter.

9. A machine of the character stated, a lever pivotally supported, a radially directed tool rigidly carried by said lever, whereby said tool is made to travel in a circular path having the lever axis as its center, means to oscillate said lever and means whereby said tool may be made. to travel over different portions of the work.

10. In a machine for securing blades and distance pieces in the groove of a turbine casing," a rotatable lever, a pressing tool rigidly carried by the end thereof, a support for said lever, and means to actuate said I lever, whereby said tool is made to travel in a circular path having theleveraxis as its center.

11. In a machine for securing blades and dlstance pieces in the groove of a turbine casing,a motor pivotally supported, a piston rod therefor, a lever suitably fulcrumed,

connections common to said piston rod and said lever, and a pressing tool'rigidly car;

ried at the end of said lever, whereby said tool is made totravel in a'circular path having the lever axis as its center.

12; In a machine for securing blades and distance pieces in the groove of a turbine casing, a motor-pivotally supported, a piston actuated by said motor, a lever suitably ful- Jriuned and having upwardly and Cl0WI1- wardly extending members, adjustable connections common to said rod and the upwardly extending member of said lever, and a pressing tool rigidly carried by said down- Wardly extending member, whereby said tool is made to travel in a circular'path having Copies'of this patent may be obtained for five cents each; ray-addressing the flOommissionei of Patents,

Washington, D. 0.

piston rod, a lever pivotally mounted on' said support, a pressing tool fixed to saidlever,

and means to control admissionand exhaust or motive fluid to sald casing-to reciprocate said piston and thereby cause said tool to travel in a circularpath having the lever" ets and having a bifurcated end, a"m0tor-,

a piston therefor connected with said bifurcated end, a pressing toolrigidly secured. to saidlever, and means to actuate said motor,

whereby saidtool is made to travel in acircular path having the lever axis as its center.

JAMEs'WILLIAMsoN lVitnesses G120. A. PARKER, WILLIAM BURLINGHAM. 

